We present an overview of the design of IRIS, an infrared (0.84 - 2.4 micron) integral field spectrograph and imaging camera for the Thirty Meter Telescope (TMT). With extremely low wavefront error (<30 nm) and on-board wavefront sensors, IRIS will take advantage of the high angular resolution of the narrow field infrared adaptive optics system (NFIRAOS) to dissect the sky at the diffraction limit of the 30-meter aperture. With a primary spectral resolution of 4000 and spatial sampling starting at 4 milliarcseconds, the instrument will create an unparalleled ability to explore high redshift galaxies, the Galactic center, star forming regions and virtually any astrophysical object. This paper summarizes the entire design and basic capabilities. Among the design innovations is the combination of lenslet and slicer integral field units, new 4Kx4k detectors, extremely precise atmospheric dispersion correction, infrared wavefront sensors, and a very large vacuum cryogenic system.
@article{arxiv.1407.2995,
title = {The Infrared Imaging Spectrograph (IRIS) for TMT: Instrument Overview},
author = {Anna M. Moore and James E. Larkin and Shelley A. Wright and Brian Bauman and Jennifer Dunn and Brent Ellerbroek and Andrew C. Phillips and Luc Simard and Ryuji Suzuki and Kai Zhang and Ted Aliado and George Brims and John Canfield and Shaojie Chen and Richard Dekany and Alex Delacroix and Tuan Do and Glen Herriot and Bungo Ikenoue and Chris Johnson and Elliot Meyer and Yoshiyuki Obuchi and John Pazder and Vladimir Reshetov and Reed Riddle and Sakae Saito and Roger Smith and Ji Man Sohn and Fumihiro Uraguchi and Tomonori Usuda and Eric Wang and Lianqi Wang and Jason Weiss and Robert Wooff},
journal= {arXiv preprint arXiv:1407.2995},
year = {2015}
}